Hay-press.



C. H. MELVIN.

HAY PRESS.

APPLICATION FILED Jun/24. I914.

Patented July 27, 1915.

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COLUMBIA PLANOGRAPH CO., WASHINGTON, D. c.

C. H. MELVIN.

HAY PRESS.

APPLICATION FILED JULY24. I914. 1,l47,7439 Patented July 27,1915.

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. CHARLES H. MELVIN, OF MOLIN'E, ILLINOIS, ASSIGNOR TO DAIN MANUFACTURING COMPANY OF IOWA, OIll OTTUMWA, IOWA, A CORPORATION OF IOWA.

HAY-PRESS.

To all whom it may concern.

Be it known that I, CHARLES H. MELVIN,

; a citizen of the United States, residing. at

v 1914, in which the plunger is operated by gears in such manner as to give a slow speed and lncreased leverage to the plunger during its compression stroke and, a greater speed during its idle'stroke.

My present invention, like that of my said application, has for its object to provide a concentrically-moimted gear for operating the plunger of a hay-press in the manner indicated, and to operate such concentrically-mounted gear from a suitable source of power by a single gear reduction. I a'ccomplish this object as illustrated in the drawings and as hereinafter described.

That which I regard as newis set forth in the claims.

In the accompanying drawings, in which I have shown only so much' of a hay-press as is necessary to a full understanding of my invention, Figure l is a partial side elevation of a hay-press showing the drive gears and associated parts; Fig. 2 is a horizontal section on line 22 of Fig. '1; and Fig. 3 is a longitudinal vertical section on line 33 of Fig. 2. 1

Referring to the drawings,-4 indicates the usual hay-press frame, and 5 a part of the pitman or plunger by the reciprocation of which the hay is compressed in the usual baling-chamber.

6 indicates the usual beater-arm pivoted at 7 upon suitable standards 8 in the usual way.

9 indicates a main driving-gear, or gears, by which the plunger is reciprocatedtwo being usually employed. Said gears are circular and are pivotally mounted upon stationary central axes suitably supported by the side-bars of the frame 4. In the construction illustrated, 10 indicates the axes of the two gears, said axes being carried by side-plates 11 secured to the frame 4, as

Specification of Letters Patent.

Patented July 2'7, 1915.

Application filed July 2a, 1914. Serial No. 852,820.

shown in Fig. 1. As best shown at 12 in Fig.2, the axes'lO project inwardly beyond the surfaces of their respective gears 9 and carry pinions13 which are fixedly secured to the respective axes by bolts ll, or other suitable means, so that they areheld stationary. v i

15 indicates pinions of the same diameter mounted upon studs 16 carried by corresponding spokes 17 of the gears 9. The pinions 15v mesh with the pinions 13, as shown in Figs. 2 and 3. Thus, as the gears 9 rotate the pinions 15 will be carried by them around the axes 10, and by reason of thelr being in mesh with the stationary pinlons 13, said pinions 15 will make two complete rotations about their own imaginary axes for each rotation of the gears 9, but as the studs 16 upon which the gears 15 rotate make one rotation during their revolution about the pinions 13, the gears 15 make but one rotation upontheir respective studs during the same cycle. The plunger 5 is connected eccentrically with the pinions 15 by a wrist-pin 18 the ends of which are journaled in said pinions 15, as shown in Fig. 2; consequently, as the pinions 15 rotate and travel about the axis of the gears 9, the wrist-pin 18 will be moved toward and from the axis of said gears, thereby varying the speed and leverage of the plunger so as to operate the plunger with increased leverage and reduced speed on the compression stroke and to operateit at a greater speed though with reduced leverage 011 the idle stroke. y

It will be understood, of course,'that the parts are so adjusted that the wrist-pin 18 is at its nearest point to the axis of the gears 9 when the point of greatest compression is reached. The beater-arm 6 is also operated by the gears 9 through the pinions 15, since it is connected by an arm 19 with the wristpin 18, as shown in Figs. 1 and 2.

The gears 9 are driven from a drive-shaft 20 by pinions 21 mounted on said. drive shaft, as shown in Figs. 2 and 3, said driveshaft, in' turn, being driven by belts 22 running over pulleys 23 and driven from any suitable source of power, as by a gas engine mounted on the hay-press frame.

Figs. 1 and 2 show the position of the pinions 15 at the point of greatest compresas the pinions 13, which are pivotally 

